Clamp for dental flasks



May 12, 1925.

w M ROMINE ET AL CLAMP FOR DENTAL FLASKS Flled July 7, 1923 \\\\\MH 2 aE A TTORIIEY Patented May 12, 1925.

UNITED STATES PATENT OFFICE.

WILLIAM M. ROMINE AND WALTER J. CLARK, F WICHITA, KANSAS.

CLAMP FOR DENTAL FLASKS.

Application filed July '7, 1923.

T 0 all whom it may concern:

Be it known that WILLIAM M. ROMINE and TALTERJ. CLARK, citizens of theUnited States, residing at Wichita, in the county of I Sedgwick andState of Kansas, have invented a new and useful Clamp for Dental Flasks,of which the following is a specification.

Our invention relates to improvements in clamps for dental flasks andthe object of our invention, is to provide a clamp for a 4 inch flask,that will let the t inch flask by turning it endwise enter a 3 inchvulcanizer.

IVe attain this object by the construction of a separate clamp asillustrated in the accompanying drawings, in which Figure 1 is a sideView of the clamp.

Figure 2 is a cross-section of one of the posts of the clamp.

Figure 3 is a top view of the upper plate to the clamp.

Figure 4 is a top view of the lower plate of the clamp, reduced in size.

Figure 5 is an end view of the clamp re duced in size.

Similar reference figures refer to the same parts in the severalillustrations.

In Figure 1, A the top plate of the clamp, is reinforced by braces A.and A better shown in Figure 3 as A. 1, 2, 3, t, 5, 6, prime, B, B areset screws that extend in the hol' low post the full length of the post,better illustrated by Figure 2. G, D, and washer C form means forretaining a coil spring on the upper plate A, and E and E are the hollowupright posts adapted to receive the setscrcws. In Figure 4, H and H arethe holes adapted to receive the threaded setscrews full length. E E Eis the lower plate having F, F, F F, as braces. In Figure 5 the severalletters refer to the same parts as in the other views.

Serial No. 650,180.

Having thus described our invention what we want to protect by LettersPatent is:

1. A clamp for dental flasks, consisting of a lower plate provided withhollow, internally threaded posts adapted to receive set screws theirfull length, and an upper plate, provided with seats for coil springsaround circular openings in opposite ends of the plate, with two coilsprings and setscrews, substantially as shown and described.

2. A dental flask clamping press, consisting or two diamond shapedplates, one of which, having an upright hollow standard, of equal lengthon each end of the plate, the interior of each standard being threadedits full length, the other plate being provided with-openings, one ineach end of the plate, adapted to receive a bolt, and seat a coilspring, a bolt having threads its full length, said bolt being adaptedto pass through the coil spring, and screw into the standards on thelower plate, all substantially as shown and described.

3. In a dental flask clamping press the combination, of a lower plate,having as a part of the plate a hollow interior threaded standard, oneach end of the plate, and upper plate provided with an opening in eachend adapted to receive abolt, with a coil spring adapted to engage underthe head of the bolt, and to seat on the end of the plate, said boltbeing provided with threads its full length, its full length adapted toenter the standard that is on each end of the lower plate, a coil springunder the head of the bolt. Substantially as shown and described.

IVILLIAM M. R-OMINE. IVALTER .I. CLARK. IVitness:

I. 13. Case.

